2011 Hyundai Sonata Hybrid: common problems

Owners of the 2011 Hyundai Sonata Hybrid filed 96 complaints with NHTSA, most often about engine and steering. Details by component below, with sources.

Key figures

Owner complaints: 96
involving a crash: 6

What fails most often

1 Engine 42% of all complaints
2 Steering 19% of all complaints
3 Electrical system 18% of all complaints
4 Service brakes 18% of all complaints
5 Powertrain 10% of all complaints
6 Air bags 8% of all complaints
7 Electronic stability control 6% of all complaints
8 Vehicle speed control 5% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Engine: 40 complaints (42% of all).
Steering: 18 complaints (19% of all).
Electrical system: 17 complaints (18% of all), 1 of them with a crash reported by the owner.
Service brakes: 17 complaints (18% of all), 3 of them with a crash reported by the owner.
Powertrain: 10 complaints (10% of all).

Symptoms owners describe

How many of the 96 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

warning lights, check engine28 · 29%
knocking, grinding or other noise16 · 17%
engine failure or replacement10 · 10%
smoke, burning smell, fire9 · 9%
stalls while driving9 · 9%
overheating, coolant loss7 · 7%
A/C or heater6 · 6%
won't start6 · 6%
loss of power / limp mode6 · 6%
jerking, harsh shifts5 · 5%

Components owners complain about

Component	Owner complaints	involving a crash
Engine	40	0
Steering	18	0
Electrical system	17	1
Service brakes	17	3
Powertrain	10	0
Air bags	8	3
Electronic stability control	6	1
Vehicle speed control	5	1
Seat belts	3	2
Wheels	3	0
Fuel/propulsion system	2	0
Suspension	2	0
Engine and cooling	1	0
Exterior lighting	1	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

Ok this accident the air bags didn't deploy. The seat belt protected. Even that I didn't broke any bone I hurt really bed my left shoulder, left hip and also I hit my head during this accident.
Air bags · crash · 2019-07-16 · NHTSA complaint #11232616
The air bags did not deploy. A police report was filed. There was no injury sustained. The vehicle was towed to an independent repair facility. The vehicle was not repaired. The vehicle was not taken to be diagnosed. The dealer and manufacturer were not notified of the failure. The failure mileage was unknown.
Service brakes · crash · 2019-02-06 · NHTSA complaint #11174667
The contact observed smoke coming from the steering column as the air bags started to deploy from the steering wheel. As a result, the contact rear ended another vehicle. The contact stated that the air bags did not fully inflate. The contact sustained injuries that required medical attention.
Air bags · crash · 2018-06-04 · NHTSA complaint #11099603
The air bags did not deploy in my accident that happened on 03/09/2018. The accident happened on I-20. The vehicle was stationary in traffic when the accident occurred. Medical staff and police officers wonder why the air bags did not deploy. The car is more likely to be totaled from the accident.
Air bags · crash · 2018-03-18 · NHTSA complaint #11080048
The brake failure warning light also started to flash and chime. I swerved off to the side of the road to avoid hitting the car in front of me and plowed through some plants on the shoulder prior to coming to a stop with my parking brake.
Service brakes · crash · 2013-10-14 · NHTSA complaint #10547877
No warning lights were illuminated. The vehicle was taken to a nearby Ford dealer, where it was diagnosed with camshaft and engine failure. The contact was informed that the camshaft and the engine needed to be replaced. The vehicle was not repaired.
Engine · 2026-08-19 · NHTSA complaint #11757938
The contact stated that while driving on the highway at 60 MPH, there was smoke coming from the rear of the vehicle. The contact immediately pulled over to inspect the vehicle. Upon checking under the hood, the contact noticed that the coolant level was low.
Engine and cooling · 2025-04-29 · NHTSA complaint #11657515
There were no warning lights illuminated. The vehicle was towed to the local dealer, where an unknown diagnosis was provided. The vehicle was not repaired. The manufacturer informed the contact that there was no warranty coverage on the vehicle for the failure. The failure mileage was approximately 82,000.
Steering · 2024-08-23 · NHTSA complaint #11610520

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

20135
20145
20155
201611
201716
201820
201916
20202
20216
20223
20231
20244
20251
20261

Comparison

By complaint count this model year ranks 3,666 of 36,656 model years in the NHTSA data (top 10% most complained about).

On average one model year of the Sonata Hybrid has 50 complaints (16 years in the data). This year has 96, above average.

What to check before buying

Engine. Cold start, unusual noises, oil leaks and engine codes.
Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.

Other years of this model

Questions and answers

What are the most common problems with the 2011 Hyundai Sonata Hybrid?

Owner complaints to NHTSA most often mention: engine, steering, electrical system. Total complaints: 96. The most frequent symptoms in complaint texts: warning lights, check engine (29%), knocking, grinding or other noise (17%), engine failure or replacement (10%).

How many service bulletins (TSB) were issued for the 2011 Hyundai Sonata Hybrid?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2011 Hyundai Sonata Hybrid from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2011 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.